KR100487770B1 - Device for cleaning chip on shot ball in descaler - Google Patents

Abstract

SUMMARY OF THE INVENTION An object of the present invention is to provide a foreign matter separation and removal apparatus for a shot blaster, which allows the shot ball or agglomerated oxidation scale that is broken in the process of reclaiming the shot ball sprayed on the strip to be separated and removed before the vertical conveyor passes.

Accordingly, the present invention has a shot blasting unit and a shot ball recovery unit in the shot blaster for peeling off the oxidative scale on the surface of the strip, the shot recovery unit is installed along the hopper side of the lower strip of the used shotball down by a certain amount Characterized in that it comprises a quantitative discharge portion for collecting, a collecting portion for collecting broken shotballs or particulate oxidative scale of the shotballs descending along the inclined surface of the hopper, and a scale removing portion for separating and removing scale lumps contained in the shotball. It provides a foreign matter separation removal apparatus of the shot blaster.

Description

Device for cleaning chip on shot ball in descaler}

The present invention relates to a shot blaster for stripping scales of strips, and more particularly, to an apparatus for removing and removing foreign substances of shot blasters, which is capable of separating and removing scales peeled from strips during shot recovery.

In general, the strip passed through the continuous annealing furnace during the production of stainless steel hot rolled coil or cold rolled coil passes through a shot blaster, which is a descaler for peeling scale layers formed on the surface of the strip.

The shot blaster is a facility for projecting a small metal ball (hereinafter referred to as a shot ball) onto a strip surface by peeling a scale layer through a wheel that rotates at a high speed. As shown in FIG. 5, the shot blaster includes a shot thrower 100. The shotball projecting unit and the shotball recovery unit for recovering the projected shotball can be largely divided, wherein the shot recovery unit hopper 120 is installed on the lower end of the duct 110 through which the strip 200, and the hopper 120 bottom It is installed on the transfer screw 121 for moving the shot ball, the hopper 120 is connected to the vertical conveyor 130, vertical conveyor 130 for vertical movement to receive the shot ball moved through the transfer screw 121 The vertical conveyor 130 includes a horizontal passage 140 and a vertical passage 150 for moving the shot ball up in the strip width direction to re-enter the shot ball projection unit.

And the filter passage 141 is installed in the horizontal passage 140 to filter only the shot ball available and sent to the vertical passage 150 through the movement path 142 and the broken shot ball or scale filter network 141 Pass through) is discharged along a separate discharge path (143).

However, the above-described shot blaster of the conventional structure has a problem of causing equipment trouble while the scale or broken shot ball generated during the scale removing operation is caught in the driving part of the transfer screw and the vertical conveyor.

In addition, the large oxidative scale does not pass through the filter network and is caught by the filter network, which hinders the recovery of the shotball, and when it is not discharged and re-injected with the shotball into the shotball projecting unit, it is projected onto the strip surface and the strip surface. There is a great issue that causes a fault.

Accordingly, the present invention has been made in order to solve the above problems, a shot blaster to remove the shot ball or agglomerated oxidation scale in advance in the process of re-recovering the shot ball sprayed on the strip separated before the vertical conveyor passes The purpose of the present invention is to provide a foreign matter separation removal device.

In order to achieve the object as described above, the present invention, in the shot blaster for removing the oxidative scale of the strip surface having a shot projection unit and a shot ball recovery unit, the shot recovery unit is installed along the side of the hopper below the strip To separate and remove the fixed quantity shot part for lowering the shotball down by a predetermined amount, the collecting part for collecting the broken shot ball or particulate oxidative scale among the shot balls descending along the inclined surface of the hopper, and the scale lump contained in the shot ball It includes a descaling unit for.

Therefore, the shotball sprayed onto the strip surface flows down the inclined surface of the hopper at the bottom of the duct, whereby the oxidative scale and the broken shotball are removed while the quantitative discharge part, the collecting part, and the removing part are removed. Will be.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a shot blaster having a foreign matter separation removal apparatus according to the present invention, Figure 2 is a perspective view showing a foreign material separation removal apparatus according to the present invention, Figure 3 is a part of Figure 2 according to the present invention 4 is a schematic cross-sectional view showing a state of use of the foreign matter separation and removal apparatus according to the present invention.

According to the above-described drawings, the shot blaster includes a shot projector including a thrower 100 for projecting a small metal ball (hereinafter referred to as a shot ball) on the upper and lower surfaces of the strip 200 through a wheel that rotates at a high speed. The hopper 10 installed at the bottom of the duct 110 through which the 200 passes, and the transfer screw 121 installed at the bottom of the hopper 10 to move the shotball and the hopper 10 are connected to the transfer screw 121. Vertical conveyor 130 for receiving vertical shots moved through the vertical conveyor 130, connected to the upper vertical conveyor 130, the shot ball raised on the vertical conveyor 130 to move in the width direction of the strip 200 re-input to the shot projection unit. It consists of a shot recovery unit including a horizontal passage 140 and a vertical passage 150 to make.

Herein, in the shot blaster of the above-described structure, the fixed-quantity discharge part for lowering the shot ball used by a predetermined amount and installed in the upper side of the inclined surface constituting the side of the hopper 10, the middle of the inclined surface of the hopper 10 A collecting part for collecting a broken shot ball or particulate oxidative scale of the shot ball which is installed in the portion and descends along the inclined surface of the hopper 10 from the quantitative discharge part, and is installed in the lower side of the inclined surface of the hopper 10 and included in the shot ball. And a scale removing unit for separating and removing the scale in the form of agglomerates.

Therefore, the used shot ball protects the driving portion of the transfer screw 121 and the vertical conveyor 130 as all the scales or broken shot balls are removed before entering the transfer screw 121 at the bottom of the hopper 10, The strip 200 will be prevented from being damaged.

The metered discharge portion is a rotating shaft 20 disposed in the width direction of the strip 200 on the inclined surface of the hopper 10, the blocking blade 21 is installed at intervals of 90 degrees in the longitudinal direction on the outer peripheral surface of the rotating shaft 20, the rotating shaft In order to rotate the 20, the step motor 22 installed on one side of the hopper 10, the drive shaft of the step motor 22 and the sprocket wheel 23 and the sprocket wheel 23 installed on the rotating shaft 20 are connected. The chain 24 is made.

According to the above structure, the shot ball projected to the strip 200 falls down along the hopper 10 and is caught by the blocking blade 21 of the rotating shaft 20. When the rotating shaft 20 is rotated 90 degrees, the blocking blade 21 At the same time the shot ball was hanging on the next blocking blade 21 is to block the path of the short ball is to send only a certain amount of the shot ball to the bottom.

In addition, the collecting unit is for separating and collecting foreign matters smaller than the shotball, such as a fine scale attached to the shotball or a broken shotball, by separating the shotball from the shotball, and are installed along the inclined surface of the hopper 10 and a fine scale flows into the surface. A perforated plate 30 having a hole formed therein, and a collecting cylinder 31 connected to the rear end of the perforating plate 30 at an outside of the hopper 10, and a collecting unit 31 connected to one side of the collecting cylinder 31 to suck a fine scale. Include.

In addition, the collecting part is installed on both sides of the collecting barrel 31 so as to shake off the fine scale attached to the shot ball in the process of the shot ball down the perforated plate 30 is installed close to the back of the perforated plate 30 with a predetermined interval (32), an injection nozzle (33) arranged along the pipe (32) toward the perforated plate (30), an air hose (34) connected to the pipe (32) for supplying air, and an air hose (34). It may further include a solenoid valve 35 for opening and closing.

Therefore, the shot ball is dropped off the fine scale by the air injected while passing through the perforated plate 30, the fine scale dropped from the shot ball is sucked into the collecting container 31 through the hole of the perforated plate 30 in accordance with the operation of the suction means Is processed.

The suction means is installed in the discharge pipe 36 and the discharge pipe 36 is connected to the discharge pipe 36, the discharge pipe 36 is installed on one side of the lower side of the collecting tube 31, the separator for separating and discharging the fine scale ( 38).

Unexplained reference numeral 39 is a filter cylinder for filtering out the fine scale contained in the suction air passing through the separation cylinder 38.

On the other hand, as shown in Figure 2 and Figure 3, the lump scale removing unit, the driving roll 40 and the driven roll 41, which is installed in the front and rear of the lower outer side of the hopper 10 to form a horizontal plane with the hopper Wrapped around the drive roll 40 and the driven roll 41 while surrounding the inner and outer sides of the foil slope through the flow passage 42 formed on the lower side of the inclined surface of (10), the front has a size enough to pass the shot ball Wire mesh belt 43 formed with a plurality of holes, is installed in the upper flow path 42 is connected to the blocking curtain 44, the driving roll 40 to prevent the shot ball is discharged to the outside of the hopper 10 It includes a drive motor 45 for rotating the drive roll 40, a scale receiving 46 for receiving and processing the scale discharged is installed on one side lower end of the wire mesh belt 43.

And an air spraying means can be installed in the lower end of the wire mesh belt 43, the scale is discharged so that the scale can be easily dropped off the wire mesh belt 43, as shown in Figure 3 wire mesh belt 43 ) At the lower end, an air pipe 48 receiving air from the air hose 47 is installed in the width direction, and the nozzle 49 is arranged on the air pipe 48 toward the wire mesh belt 43, and the nozzle 49 is disposed. The scale on the wire mesh belt 43 is easily dropped by the air injected through the) to fall to the scale receiving 46.

Therefore, the shot ball passes through the hole of the wire mesh belt 43 and is sent to the conveying screw 121, the mass scale larger than the shot ball is conveyed without passing through the wire mesh belt 43 is discharged to the scale receiving 46.

Here, the holes of the wire mesh belt 43 are formed to have a diameter slightly larger than that of the shot ball, so that all scales larger than the shot ball are filtered out.

According to the present invention, the driving roll 40 is positioned above the driven roll 41 so that the wire mesh belt 43 is inclined downward from the driving roll 40 toward the driven roll 41.

In addition, the removal unit may further include a hunting means to smoothly escape the shot ball through the hole of the wire mesh belt 43, for this purpose, the hunting means is installed along the outer end of the wire mesh belt 43 and the longitudinal direction Hunting belt 50 formed with an induction hole 51 at a predetermined interval along the hopper 10 is installed rotatably on the outer surface and the hunting bar 52 protruding above the induction hole 51, hunting The torsion spring 53 is inserted into the rotation shaft of the bar 52 and spans between the side of the hunting bar 52 and the hopper 10 to apply an elastic force to the hunting bar 52 in a direction opposite to the movement of the hunting belt 50. It is made to include.

Therefore, when the wire mesh belt 43 is moved, the hunting bar 52 is caught in the induction hole 51 of the hunting belt 50, and the hunting bar 52 is constantly hunting belt 50 by the elastic force of the torsion spring 53. To hit the vibrating wire mesh belt 43. Due to this, the shot ball on the wire mesh belt 43 is smoothly escaped through the hole of the wire mesh belt 43.

Hereinafter will be described the operation of the present invention.

The shotball projected from the thrower of the shotball projecting unit hits the upper and lower surfaces of the strip 200 in the duct to peel off the oxidative scale on the surface of the strip 200, and the shotball used and the peeled oxidative scale and the broken shotball during the peeling operation are It falls to the hopper 10 installed in the lower duct.

Meanwhile, each driving unit of the apparatus is operated according to the shot blaster operation signal, and shotballs and scales flowing down the inclined surface of the hopper 10 by falling into the hopper 10 as described above are cut off wings installed on the hopper 10 ( 21) can not be blocked.

The rotating shaft 20 in which the blocking blade 21 is installed is rotated at a constant speed according to the operation of the step motor 22. As the rotating shaft 20 rotates, the rotating shaft 20 and the hopper 10 are rotated. Blocking blades 21 which prevented the lowering of the shotballs between the inclined surfaces are also moved to open between the inclined surfaces of the blocking blades 21 and the hopper 10, through which the shot balls and scale fall.

And the next blocking blade 21 is lowered to the inclined plate of the hopper 10 to prevent the shot ball falling again. In this way, the shot blade and scale are dropped by only a predetermined amount by the blocking blade 21 can be processed.

The shot ball and scale flowing down through the blocking blade 21 pass through the perforated plate 30 installed on the inclined surface of the hopper 10, and in this process, fine scales or broken shot balls are processed through holes formed in the perforated plate 30. .

That is, the air supplied to the pipe 32 installed inside the perforated plate 30 is injected through the injection nozzle 33 installed in the pipe 32 and is injected to the shotball passing through the perforated plate 30, and by the air injected in this way Fine scales, etc. on the shotball are dropped from the shotball.

The fine scale thus removed is sucked into the collecting container 31 through the hole formed in the perforated plate 30 while passing through the perforated plate 30. The collecting container 31 sucks air through the holes of the perforated plate 30 according to the operation of the suction fan 37 connected to the discharge pipe 36, so that the fine scale is sucked into the collecting container 31 through the hole. It will be entered.

The scale suctioned into the collecting container 31 is completely separated and removed while passing through the separating container 38 and the filter container 39.

On the other hand, the shot ball continues to flow down the inclined surface of the hopper 10 while passing through the perforated plate 30 is reached on the wire mesh belt 43 horizontally installed at the bottom of the inclined surface, and only the shot ball through the hole formed in the wire mesh belt 43 Outgoing, foreign matter such as the remaining scale mass larger than the diameter of the shot ball is transported as it is carried on the wire mesh belt 43 as it is discharged.

That is, according to the operation of the drive motor 45, the wire mesh belt 43 spanning the driving roll 40 and the driven roll 41 rotates in one direction, and in this state, the hole of the wire mesh belt 43 is moved. The foreign matter such as the scale that is not passed through is moved along the wire mesh belt 43 and is dropped into the scale receiving plate 46 placed below the one side of the outgoing belt.

At this time, the hunting bar 52 by the hunting belt 50 installed on the side of the wire mesh belt 43 is continuously impacting the wire mesh belt 43, when the hunting belt 50 is moved to the hunting belt 50 Every time the hunting hole formed in) passes, the torsion bar elastically installed in the torsion spring 53 is pushed, and the torsion bar that is pushed is released when the hunting hole passes and is rotated to its original position by the elastic return force of the torsion spring 53. Will be hitting the hunting belt 50.

The impact applied as it is transmitted to the wire mesh belt 43 as it is to flow the wire mesh belt 43 and the shot ball is shaken by this flow will be able to smoothly escape through the hole of the wire mesh belt 43.

The shot ball escaping through the hole of the wire mesh belt 43 is transported on the transfer screw 121 of the bottom surface of the hopper 10 and is normally recovered.

According to the foreign matter separation removal apparatus of the shot blaster according to the present invention as described above, it is possible to prevent equipment trouble of the shot ball recovery unit by separating and removing all the scale lumps or broken shot ball pieces before the used shot balls are recovered.

In addition, it is possible to improve the quality of the product by preventing scratches on the surface of the strip due to the untreated scale mass.

1 is a perspective view showing a shot blaster having a foreign matter separation and removal apparatus according to the present invention,

Figure 2 is a perspective view showing a foreign material separation removal apparatus according to the present invention,

3 is a partial detailed view of FIG. 2 in accordance with the present invention;

Figure 4 is a schematic cross-sectional view showing the state of use of the foreign matter separation removal apparatus according to the present invention,

5 is a perspective view showing a shot bull blaster according to the prior art.

Explanation of symbols on the main parts of the drawings

10: hopper 20: axis of rotation

21: cut off wing 22: step motor

30: punched plate 31: collecting container

32: pipe 37: suction fan

40: driving roll 41: driven roll

43: wire mesh belt 44: blocking curtain

45: drive motor 50: hunting belt

51: distribution hall 52: hunting bar

53: torsion spring

Claims (5)

Shotgun projection unit including a thrower for projecting the shotball on the upper and lower strips through a high-speed rotating wheel, a hopper installed at the bottom of the duct through which the strip passes, and a transfer screw installed at the bottom of the hopper to move the shotball A vertical conveyor connected to the hopper to receive the shot ball moved through the transfer screw, and a vertical conveyor connected to the vertical conveyor to move the shot ball raised on the vertical conveyor in the strip width direction to re-introduce the shot ball into the shot projection unit. In a shot blaster comprising a shot recovery unit including a passage and a vertical passage, The shot ball recovery unit is provided along the hopper side of the lower strip of the fixed quantity discharge portion for sending down the used shot balls to the lower portion by a predetermined amount, and to capture the broken shot ball or particulate oxidative scale of the shot ball down the slope of the hopper Debris separation device of the shot blaster, characterized in that it further comprises a collection unit, the scale removal unit for separating and removing the scale lump contained in the shot ball. According to claim 1, wherein the fixed amount discharge portion is disposed on the inclined surface of the hopper in the strip width direction, the outer blades of the rotary shaft is provided at intervals of 90 degrees in the longitudinal direction, is installed on one side of the hopper to rotate the rotary shaft The foreign matter separation removal apparatus of the shot blaster, characterized in that it comprises a drive means. According to claim 1, wherein the collecting unit is installed along the inclined surface of the hopper and the surface is formed in the hole is formed in the hole in which the fine scale flows, and the collecting vessel is connected to the rear end of the perforated plate from the hopper outside, is connected to one side of the collecting vessel fine Separation and removal apparatus of the shot blaster, characterized in that it comprises a suction means for sucking the scale. According to claim 1, wherein the scale remover is formed on the driving roll and the driven roll, which is installed in the front and rear of the lower end of the hopper horizontally with the ground, and surrounds the inner and outer sides of the inclined surface of the hopper through the flow path formed on the lower side of the inclined surface of the hopper Wire mesh belt is formed across the driving roll and the driven roll, the front surface has a plurality of holes having a size enough to pass the shot ball, blocking curtain for preventing the shot ball from being discharged to the outside of the hopper is installed on the upper passage; The driving motor for rotating the driving roll is connected to the driving roll, the foreign matter separation removal device of the shot blaster, characterized in that it comprises a scale receiving for processing to receive the discharged scale installed on the lower side of the wire mesh belt. According to claim 4, Hunting belt is installed along the outer end of the wire mesh belt and the guide hole is formed at a predetermined interval along the longitudinal direction, the hunting is installed rotatably on the outer surface of the hopper and the top protrudes over the guide hole Bar, which is inserted into the pivoting shaft of the hunting bar and spans between the side of the hunting bar and the hopper and consists of a torsion spring for applying elastic force to the hunting bar in the opposite direction of the hunting belt movement, so that the shot ball can be smoothly escaped through the hole of the wire mesh belt. The foreign matter separation removal apparatus of the shot blaster, characterized in that it further comprises a hunting means.